Samuel Yates began, and this site continues, a database of the largest known primes. Primes in that database are assigned a proof-code to show who should be credited with the discovery as well as what programs and projects they used. (Discoverers have one prover-entry, but may have many proof-codes because they use a variety of programs...)
This page provides data on L4561, one of those codes.
Code name (*): L4561 (See the descriptive data below.) Persons (*): 2 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Propper, Batalov, CycloSv, Cyclo, EMsieve, PIES, LLR Number of primes: total 5 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 51.7785, on current list 51.7785 (normalized score 1976) Entrance Rank (*): mean 382.40 (minimum 12, maximum 477)
Below is additional information about this entry.
Display (text): Propper, Batalov, CycloSv, Cyclo, EMsieve, PIES, LLR Display (short): Propper & Batalov Database id: 8426 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.102% of the (active) primes and 2.727% of the (active) score for this program. Entry last modified: 2020-07-04 12:50:16